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Katritsis DG, Fragakis N, Katritsis G, Doukas V, Marine JE, Desmukh A, Latchamsetty R, Anderson RH, Calkins H. High-resolution mapping of the circuit of typical atrioventricular nodal reentrant tachycardia. J Interv Card Electrophysiol 2024; 67:599-607. [PMID: 37691082 DOI: 10.1007/s10840-023-01632-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 08/30/2023] [Indexed: 09/12/2023]
Abstract
BACKGROUND Recent anatomic and electrophysiologic evidence has provided new insight into the anatomic substrate. Previous reports on electroanatomic mapping (EAM) of the circuit of atrioventricular nodal reentrant tachycardia (AVNRT) have been limited by mapping only the triangle of Koch on the right side of the septum and by the use of conventional mapping tools. The objectives are to obtain comprehensive high-resolution mapping of typical AVNRT and to investigate the role of the atrioventricular ring tissues in the circuit. METHODS We employed EAM with the use of novel modules and algorithms for studying typical AVNRT from the right and the left sides of the septum. RESULTS We performed extensive mapping of both the atrial septum and the septal vestibule of the tricuspid valve during typical AVNRT in 9 (6 females) patients, aged 49.6 ± 12.1 years. In two of these, left septal mapping was also obtained through the aorta. The earliest initial activation was variable, emanating from the superior or medial septum. The impulse consistently appeared below the orifice of the coronary sinus, at the site where its inferoanterior margin merged with the septal vestibule of the tricuspid valve at its entrance to the right atrium. It then returned to the initial activation site, presumably through the septal vestibular myocardium. The left septal activation area corresponded to that recorded on the right side. CONCLUSIONS Typical AVNRT uses a circuit confined within the pyramid of Koch from the AV node to the septal isthmus, involving the myocardial walls of the pyramidal space.
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Affiliation(s)
- Demosthenes G Katritsis
- Hygeia Hospital, 4 Erythrou Stavrou Str, 15123, Athens, Greece.
- Johns Hopkins Hospital, Baltimore, MD, USA.
| | | | | | | | | | - Amrish Desmukh
- University of Michigan Medical School, Ann Arbor, MI, USA
| | | | - Robert H Anderson
- Biosciences Institute, Newcastle University, Newcastle Upon Tyne, UK
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Fink T, Sciacca V, Nischik F, Bergau L, Guckel D, El Hamriti M, Khalaph M, Braun M, Winnik S, Didenko M, Imnadze G, Sommer P, Sohns C. Atrial fibrillation ablation workflow optimization facilitated by high-power short-duration ablation and high-resolution mapping. Europace 2024; 26:euae067. [PMID: 38516791 DOI: 10.1093/europace/euae067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 02/19/2024] [Indexed: 03/23/2024] Open
Abstract
AIMS Pulmonary vein isolation (PVI) for catheter ablation of atrial fibrillation (AF) is a time-demanding procedure. High-power short-duration (HPSD) ablation protocols and high-density mapping catheters have recently been introduced to clinical practice. We investigated the impact of high-density mapping and HPSD ablation protocols on procedural timing, efficacy, and safety by comparing different standardized set-ups. METHODS AND RESULTS Three electrophysiology (EP) laboratory set-ups were analysed: (i) circular catheter for mapping and HPSD ablation with 30/35 W guided by an ablation index (AI); (ii) pentaspline catheter for mapping an HPSD ablation with 50 W guided by an AI; and (iii) pentaspline catheter for mapping and HPSD ablation with 90 W over 4 s using a novel ablation catheter. All patients underwent PVI without additional left atrial ablation strategies. Procedural data and operating intervals in the EP laboratory were systematically analysed. Three hundred seven patients were analysed (30/35 W AI: n = 102, 50 W AI: n = 102, 90 W/4 s: n = 103). Skin-to-skin times [105.3 ± 22.7 (30/35 W AI) vs. 81.4 ± 21.3 (50 W AI) vs. 69.5 ± 12.2 (90 W/4 s) min, P ≤ 0.001] and total laboratory times (132.8 ± 42.1 vs. 107.4 ± 25.7 vs. 95.2 ± 14.0 min, P < 0.001) significantly differed among the study groups. Laboratory interval analysis revealed significant shortening of mapping and ablation times. Arrhythmia-free survival after 12 months was not different among the study groups (log-rank P = 0.96). CONCLUSION The integration of high-density mapping and HPSD protocols into an institutional AF ablation process resulted in reduced procedure times without compromising safety or efficacy.
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Affiliation(s)
- Thomas Fink
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Vanessa Sciacca
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Flemming Nischik
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Leonard Bergau
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Denise Guckel
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Mustapha El Hamriti
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Moneeb Khalaph
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Martin Braun
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Stephan Winnik
- Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland
| | - Maxim Didenko
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Guram Imnadze
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Philipp Sommer
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
| | - Christian Sohns
- Clinic for Electrophysiology, Herz- und Diabeteszentrum NRW, Georgstraße 11, 32545 Bad Oeynhausen, Germany
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Yang S, Waks JW, Galvao MET, Maher TR, d'Avila A, Tung P. The Use of Local Activation Timing Histogram in Ablation of Focal and Re-Entrant Atrial Tachycardias. JACC Clin Electrophysiol 2023; 9:2603-2614. [PMID: 37804260 DOI: 10.1016/j.jacep.2023.08.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/14/2023] [Accepted: 08/20/2023] [Indexed: 10/09/2023]
Abstract
BACKGROUND Activation mapping is often used to differentiate focal from re-entrant arrhythmias. This can be challenging but is critical to ablation success. The local activation time (LAT) histogram, which depicts point distribution over isochronal segments, may help characterize arrhythmia mechanisms and identify an optimal ablation strategy. OBJECTIVES This study aimed to investigate features of the LAT histogram associated with the focal vs re-entrant mechanism of atrial tachycardias (ATs) and the use of the LAT histogram in the identification of target ablation sites. METHODS We retrospectively evaluated cases of focal and re-entrant ATs performed at a single academic tertiary care center for which activation mapping was performed using CARTO 3 version 7 software (Biosense Webster). Baseline patient, arrhythmia, and procedural characteristics as well as LAT histogram features were evaluated for each case. LAT histogram-guided ablation targets were also compared against actual ablation sites. RESULTS Among 52 ATs assessed, 17 were focal, and 35 were re-entrant. Tachycardia cycle length was significantly shorter in re-entrant than in focal ATs (288.2 milliseconds [Q1-Q3: 250-306.5 milliseconds] vs 370 milliseconds [Q1-Q3: 285-400 milliseconds], respectively; P = 0.006). LAT histograms contained more "valleys" in re-entrant than in focal ATs (3 [Q1-Q3: 2-4] vs 1 [Q1-Q3: 1-1]; P < 0.001). No focal ATs contained >2 and no re-entrant ATs contained <1 LAT valley(s). All successful ablation sites correlated with LAT histogram-suggested sites. CONCLUSIONS LAT histograms can help distinguish focal from re-entrant Ats and identify effective ablation sites.
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Affiliation(s)
- Shu Yang
- Harvard Thorndike Electrophysiology Institute, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA; Harvard Medical School, Boston, Massachusetts, USA
| | - Jonathan W Waks
- Harvard Thorndike Electrophysiology Institute, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA; Harvard Medical School, Boston, Massachusetts, USA
| | | | - Timothy R Maher
- Harvard Thorndike Electrophysiology Institute, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA; Harvard Medical School, Boston, Massachusetts, USA
| | - Andre d'Avila
- Harvard Thorndike Electrophysiology Institute, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA; Harvard Medical School, Boston, Massachusetts, USA
| | - Patricia Tung
- Harvard Thorndike Electrophysiology Institute, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA; Harvard Medical School, Boston, Massachusetts, USA.
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Eltsov I, Pannone L, Ramak R, Monaco C, Della Rocca DG, Bala G, Kronenberger R, Overeinder I, Almorad A, Stroker E, Sieira J, Brugada P, Sarkozy A, Chierchia GB, de Asmundis C, La Meir M. 3D mapping challenges in hybrid video-assisted thoracoscopic surgical ablation of Brugada syndrome. INTERDISCIPLINARY CARDIOVASCULAR AND THORACIC SURGERY 2023; 37:ivad160. [PMID: 37756702 PMCID: PMC10541674 DOI: 10.1093/icvts/ivad160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/01/2023] [Accepted: 09/23/2023] [Indexed: 09/29/2023]
Abstract
OBJECTIVES Brugada syndrome is a life-threatening disease with an arrhythmogenic substrate located in the epicardium of right ventricle outflow tract. Therefore, the correct region identification is crucial for a successful ablation procedure. Various mapping techniques can be adopted to elaborate this issue, but they were all initially developed for endovascular use. METHODS In this study, we analysed 21 consecutive hybrid video-assisted thoracoscopic ablation of Brugada syndrome, performed using different mapping systems to identify the ablation target and confirm the elimination of arrhythmogenic substrate; 35 maps have been analysed. RESULTS Acute success of epicardial right ventricle outflow tract ablation has been achieved in 100% of procedures, no periprocedural complications have been observed; HD Grid catheter showed higher area identification speed and faster fractionated potentials visualization; Rhythmia system has demonstrated the best map density; Carto 3 system showed a significant advantage in patient preparation time, but mapping speed was reduced due to focal catheter use only. CONCLUSIONS All tested electro anatomical mapping systems can be used for hybrid video-assisted thoracoscopic ablation with same clinical success; however, accuracy and efficacy of mapping systems are heterogenous and highly dependent on proper patient preparation, mapping system and physician skills.
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Affiliation(s)
- Ivan Eltsov
- Cardiac Surgery Department, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, Brussels, Belgium
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Luigi Pannone
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Robbert Ramak
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Cinzia Monaco
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Domenico Giovanni Della Rocca
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Gezim Bala
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Rani Kronenberger
- Cardiac Surgery Department, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, Brussels, Belgium
| | - Ingrid Overeinder
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Alexander Almorad
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Erwin Stroker
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Juan Sieira
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Pedro Brugada
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Andrea Sarkozy
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Gian-Battista Chierchia
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Carlo de Asmundis
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Mark La Meir
- Cardiac Surgery Department, Universitair Ziekenhuis Brussel—Vrije Universiteit Brussel, Brussels, Belgium
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Castells F, Ruipérez-Campillo S, Segarra I, Cervigón R, Casado-Arroyo R, Merino JL, Millet J. Performance assessment of electrode configurations for the estimation of omnipolar electrograms from high density arrays. Comput Biol Med 2023; 154:106604. [PMID: 36709520 DOI: 10.1016/j.compbiomed.2023.106604] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/18/2023] [Accepted: 01/22/2023] [Indexed: 01/26/2023]
Abstract
OBJECTIVE The aim of this study is to propose a method to reduce the sensitivity of the estimated omnipolar electrogram (oEGM) with respect to the angle of the propagation wavefront. METHODS A novel configuration of cliques taking into account all four electrodes of a squared cell is proposed. To test this approach, simulations of HD grids of cardiac activations at different propagation angles, conduction velocities, interelectrode distance and electrogram waveforms are considered. RESULTS The proposed approach successfully provided narrower loops (essentially a straight line) of the electrical field described by the bipole pair with respect to the conventional approach. Estimation of the direction of propagation was improved. Additionally, estimated oEGMs presented larger amplitude, and estimations of the local activation times were more accurate. CONCLUSIONS A novel method to improve the estimation of oEGMs in HD grid of electrodes is proposed. This approach is superior to the existing methods and avoids pitfalls not yet resolved. RELEVANCE Robust tools for quantifying the cardiac substrate are crucial to determine with accuracy target ablation sites during an electrophysiological procedure.
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Affiliation(s)
| | - Samuel Ruipérez-Campillo
- ITACA Institute, Universitat Politècnica de València, Valencia, Spain; Department of Bioengineering, University of California, Berkeley, CA, USA; School of Medicine, Stanford University, Palo Alto, CA, USA.
| | - Izan Segarra
- ITACA Institute, Universitat Politècnica de València, Valencia, Spain
| | | | | | - José Luis Merino
- Arrhythmia and Robotic Electrophysiology Unit, Hospital Universitario La Paz, Madrid, Spain
| | - José Millet
- ITACA Institute, Universitat Politècnica de València, Valencia, Spain
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Nagase T, Kato R, Asano S, Fukunaga H, Yoshida Y, Hayashi Y, Sekiguchi Y, Nanasato M, Nitta J, Isobe M. Spatial relationship of localized sources of persistent atrial fibrillation identified by a unipolar-based automated algorithm to complex fractionated atrial electrocardiograms and atrial low voltage areas. J Cardiovasc Electrophysiol 2023; 34:337-344. [PMID: 36423234 DOI: 10.1111/jce.15755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/10/2022] [Accepted: 10/31/2022] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Spatial characteristics of localized sources of persistent atrial fibrillation (AF) identified by unipolar-based panoramic mapping software (CARTOFINDER) remain unclear. We evaluated spatial characteristics of bi-atrial AF localized sources in relation to complex fractionated atrial electrocardiograms (CFAEs) and atrial low voltage area (LVAs) (≤0.35 mV during AF). METHODS AND RESULTS Twenty consecutive patients with persistent AF underwent bi-atrial voltage, CFAE, and CARTOFINDER mapping before the beginning of ablation (18 [90%] patients, initial procedure; 2 [10%] patients, repeat procedure). CFAEs were recorded using the interval confidence level (ICL) mode and defined as sites with a confidence level of ≥80% of maximal ICL number. We elucidated the following: (1) differences in the rate of AF localized sources and CFAEs inside or outside the atrial LVAs; (2) distribution of AF localized sources and CFAEs; and (3) distance between the closest points of AF localized sources and CFAEs. A total of 270 AF localized sources and 486 CFAEs were identified in 20 patients. AF localized sources were confirmed more often outside atrial LVAs than CFAEs (71% vs. 46% outside LVA, p < .001). AF localized sources and CFAEs were diffusely distributed without any tendency in bi-atria. Mean distance between closest AF localized sources and CFAEs was 22 ± 8 mm. CONCLUSION AF localized sources identified by CARTOFINDER are different therapeutic targets as compared to CFAEs and could be confirmed both inside and outside atrial LVAs.
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Affiliation(s)
- Takahiko Nagase
- Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan
| | - Ryuichi Kato
- Department of Cardiology, Higashiyamato Hospital, Tokyo, Japan
| | - So Asano
- Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan
| | - Hiroshi Fukunaga
- Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan
| | | | - Yosuke Hayashi
- Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan
| | - Yukio Sekiguchi
- Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan
| | - Mamoru Nanasato
- Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan
| | - Junichi Nitta
- Department of Cardiology, Sakakibara Heart Institute, Tokyo, Japan
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7
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Hangiel U, Kuśnierz J, Bardyszewski A, Dzwonkowska D, Polańska-Skrzypczyk M, Derejko P. Atrial electrogram amplitude variability during atrial fibrillation ablation. J Cardiovasc Electrophysiol 2023; 34:35-43. [PMID: 36217991 DOI: 10.1111/jce.15702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 10/01/2022] [Accepted: 10/06/2022] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Variability of the bipolar atrial electrogram amplitude may affect voltage maps created during ablation procedures, and thus also the extent of ablations. Therefore, the aim of the study was to assess the beat-to-beat electrogram amplitude variability in the left atrium in patients undergoing atrial fibrillation ablation. METHODS In 11 patients undergoing ablation for atrial fibrillation, 362 mapping points were collected in two series. At each point, three consecutive beats were recorded and verified including the bipolar electrogram amplitude, contact force (CF), and orientation of the catheter tip. The repeatability and reproducibility of obtained measurements between consecutive beats and series were assessed by the Pearson correlation coefficient (r), the Bland-Altman test, repeatability coefficient (RC), relative standard deviation (RSD), and concordance correlation coefficient (CCC). RESULTS A total of 1086 beats were analyzed. The correlation coefficient for bipolar atrial electrogram amplitude for the first two beats, and for the first and the third beats were 0.94 and 0.86, respectively. The average of differences between the first two beats and between the first and the third beats were 0.06 and 0.13 mV with 95% limits of agreement (LoA) within ±0.98 and ±1.74 mV, respectively. For CF values ≤5 and ≥20 g, the 95% LoA were narrower compared to other CF ranges and were ±0.49 and ±0.71 mV from the average value, respectively. When the analyzes were performed within the predefined ranges of bipolar electrogram amplitude: 0.05-1; 1-2; 2-3 mV, the 95% LoA were within ±0.33, ±0.98, and ±0.84 mV from the average value, respectively. RC and RSD were 1.41 mV and 20.8%, respectively. For repeated measurement between series, CCC ranged from 0.67 to 0.71 and the 95% LoA were within ±2.7 to 2.9 mV from the average value. CONCLUSION Bipolar atrial electrogram amplitude recorded at a given site during ablation procedures is variable to an extent that may be clinically relevant. The magnitude of the observed variability is greater during remapping.
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Affiliation(s)
| | - Jacek Kuśnierz
- Department of Cardiology, Medicover Hospital, Warsaw, Poland
| | | | | | | | - Paweł Derejko
- Department of Cardiology, Medicover Hospital, Warsaw, Poland.,Cardiac Arrhythmias Department, National Institute of Cardiology, Warsaw, Poland
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8
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Miyazaki S. Low-voltage areas identified with new mapping catheters and technologies. J Cardiovasc Electrophysiol 2022; 33:1412-1413. [PMID: 35437822 DOI: 10.1111/jce.15501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 04/11/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Shinsuke Miyazaki
- Department of Advanced Arrhythmia Research and Department of Cardiovascular Medicine, Tokyo Medical and Dental University, Tokyo, Japan
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9
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Saito J, Yamashita K, Numajiri T, Gibo Y, Usumoto S, Narui S, Fujioka T, Asukai Y, Igawa W, Ono M, Ebara S, Okabe T, Isomura N, Ochiai M. Grid-mapping catheters versus PentaRay catheters for left atrial mapping on ensite precision mapping system. J Cardiovasc Electrophysiol 2022; 33:1405-1411. [PMID: 35441420 DOI: 10.1111/jce.15498] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/18/2022] [Accepted: 03/25/2022] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Areas displaying reduced bipolar voltage are defined as low-voltage areas (LVAs). Moreover, left atrial (LA) LVAs after pulmonary vein isolation (PVI) have been reported as a predictor of recurrent atrial fibrillation (AF). In this study, we compared grid mapping catheter (GMC) with PentaRay catheter (PC) for LA voltage mapping on Ensite Precision mapping system. METHODS Twenty-six consecutive patients with LVAs and border zone within the LA were enrolled. After achieving PVI, voltage mapping under high right atrial pacing for 600 ms was performed twice using each catheter type (GMC first, PC next). Furthermore, LVA was defined as a region with a bipolar voltage of <0.50, and border zone was defined as a region with a bipolar voltage of <1.0, or <1.5 mV. RESULTS Compared with PC, using GMC, voltage mapping contained more mapping points (20 242 [15 859, 26 013] vs. 5589 [4088, 7649]; p < .0001), and more mapping points per minute(1428 [1275, 1803] vs. 558 [372, 783]; p < .0001). In addition, LVA and border zone size using GMC was significantly less than that reported using PC: <1.0 mV (5.9 cm2 [2.9, 20.2] vs. 13.9 cm2 [6.3, 24.1], p = .018) and <1.5 mV voltage cutoff (10.6 cm2 [6.6, 27.2] vs. 21.6 cm2 [12.6, 35.0], p = .005). CONCLUSION Bipolar voltage amplitude estimated by GMC was significantly larger than that estimated by PC on Ensite Precision mapping system. GMC may be able to find highly selective identification of LVAs with lower prevalence and smaller LVA and border zone size.
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Affiliation(s)
- Jumpei Saito
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Kennosuke Yamashita
- Department of Cardiovascular Medicine, Sendai Kousei Hospital, Sendai, Japan.,Cardiac Arrhythmia Center, Sendai Kousei Hospital, Sendai, Japan
| | - Takaki Numajiri
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Yuma Gibo
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Soichiro Usumoto
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Syuro Narui
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Tatsuki Fujioka
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Yu Asukai
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Wataru Igawa
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Morio Ono
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Seitaro Ebara
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Toshitaka Okabe
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Naoei Isomura
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
| | - Masahiko Ochiai
- Division of Cadiology, Northern Yokohama Hospital, Showa University, Yokohama, Japan
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